Process for producing polycarbonates from nitrogen diol and aromatic diol haloformate.
AssigneeXerox Corporation
InventorsWalter Mychajlowskij, George Liebermann, Dasarao K. Murti
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Abstract
Bishaloformate derivatives of diols, especially bisphenols, are used in a polycondensation reaction under low temperature interfacial polycondensation conditions to obtain high molecular weight polycarbonates or alternating copolycarbonates which are useful as photoreceptor materials.
Claims23
A process for producing a polycarbonate, comprising polymerizing a diol selected from the group consisting of N,N'-diphenyl-N,N'-bis(3-hydroxyphenyl)-[1,1'-biphenyl]-4,4'-diamine, 3,5-dihydroxyphenyl-9-dicyanomethylene-4-carboxylate,N,N-bis(4-biphenyl)-3 ,5-dihydoxyaniline, and bis(m-hydroxyphenyl)-4-bisphenylamine with an aromatic diol haloformate.
Dependencies are inferred from the claim text.